15x^2+92x=60

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Solution for 15x^2+92x=60 equation:


Simplifying
15x2 + 92x = 60

Reorder the terms:
92x + 15x2 = 60

Solving
92x + 15x2 = 60

Solving for variable 'x'.

Reorder the terms:
-60 + 92x + 15x2 = 60 + -60

Combine like terms: 60 + -60 = 0
-60 + 92x + 15x2 = 0

Begin completing the square.  Divide all terms by
15 the coefficient of the squared term: 

Divide each side by '15'.
-4 + 6.133333333x + x2 = 0

Move the constant term to the right:

Add '4' to each side of the equation.
-4 + 6.133333333x + 4 + x2 = 0 + 4

Reorder the terms:
-4 + 4 + 6.133333333x + x2 = 0 + 4

Combine like terms: -4 + 4 = 0
0 + 6.133333333x + x2 = 0 + 4
6.133333333x + x2 = 0 + 4

Combine like terms: 0 + 4 = 4
6.133333333x + x2 = 4

The x term is 6.133333333x.  Take half its coefficient (3.066666667).
Square it (9.404444446) and add it to both sides.

Add '9.404444446' to each side of the equation.
6.133333333x + 9.404444446 + x2 = 4 + 9.404444446

Reorder the terms:
9.404444446 + 6.133333333x + x2 = 4 + 9.404444446

Combine like terms: 4 + 9.404444446 = 13.404444446
9.404444446 + 6.133333333x + x2 = 13.404444446

Factor a perfect square on the left side:
(x + 3.066666667)(x + 3.066666667) = 13.404444446

Calculate the square root of the right side: 3.661208058

Break this problem into two subproblems by setting 
(x + 3.066666667) equal to 3.661208058 and -3.661208058.

Subproblem 1

x + 3.066666667 = 3.661208058 Simplifying x + 3.066666667 = 3.661208058 Reorder the terms: 3.066666667 + x = 3.661208058 Solving 3.066666667 + x = 3.661208058 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-3.066666667' to each side of the equation. 3.066666667 + -3.066666667 + x = 3.661208058 + -3.066666667 Combine like terms: 3.066666667 + -3.066666667 = 0.000000000 0.000000000 + x = 3.661208058 + -3.066666667 x = 3.661208058 + -3.066666667 Combine like terms: 3.661208058 + -3.066666667 = 0.594541391 x = 0.594541391 Simplifying x = 0.594541391

Subproblem 2

x + 3.066666667 = -3.661208058 Simplifying x + 3.066666667 = -3.661208058 Reorder the terms: 3.066666667 + x = -3.661208058 Solving 3.066666667 + x = -3.661208058 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-3.066666667' to each side of the equation. 3.066666667 + -3.066666667 + x = -3.661208058 + -3.066666667 Combine like terms: 3.066666667 + -3.066666667 = 0.000000000 0.000000000 + x = -3.661208058 + -3.066666667 x = -3.661208058 + -3.066666667 Combine like terms: -3.661208058 + -3.066666667 = -6.727874725 x = -6.727874725 Simplifying x = -6.727874725

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.594541391, -6.727874725}

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